Simple sumps

[vito is hooked]

Sold my 300 gal tank. *******. Now getting back into hobby 90 gal with 40 gal sump just looking for some simple ideas small fish load and some softies

 

[Vinny Kreyling]

Keep small fish for more movement, Blennies & Gobies come to mind along with a shrimp or 2.

 

[Timfish]

Here's a simple system just like what you're setting up. As phototrophs or mixotrophs corals can be the central part of a reef system inorganic nutrient cycling.

https://youtu.be/mT1btcWUDBo